Quality-Driven Streaming

1. A method performed by a wireless transmit/receive unit (WTRU), the method comprising: receiving a manifest file comprising a description of a plurality of segments of media content, wherein each segment represents a time-based portion of the media content, and wherein the manifest file indicates a bitrate and an absolute quality level for each of the plurality of segments; selecting a segment of the plurality of segments based on the bitrate and the absolute quality level associated with the segment of the media content; sending a request for the segment of the media content; and receiving the requested segment of the media content.

2. The method of claim 1 , wherein the absolute quality level comprises at least one of peak signal-to-noise ratio (PSNR), structural similarity (SSIM), video quality metric (VQM), visual information fidelity (VIF), J.341, or mean opinion score (MOS).

3. The method of claim 1 , wherein the manifest file comprises a media presentation description (MPD) file.

4. The method of claim 1 , wherein the manifest file further comprises a description of a plurality of representations of the media content, and wherein each representation comprises at least one segment of the media content.

5. The method of claim 1 , wherein the manifest file specifies the same time interval of the media content for each segment of the plurality of segments.

6. The method of claim 1 , wherein the segment is selected based on the segment having a lowest bitrate of the plurality of segments that have at least a threshold absolute quality level and that are defined by the manifest file to have the same time interval of the media content.

7. The method of claim 1 , wherein the manifest file comprises a segment index file.

8. The method of claim 7 , wherein the segment index file comprises at least one of an MP4 file or an M4S file.

9. The method of claim 7 , wherein the segment index file comprises an ISOBMFF-based file container comprising at least one box, and wherein a segment quality parameter is included within the at least one box of the ISOBMFF-based file container.

10. The method of claim 1 , comprising: receiving a presence of the absolute quality level via a flag in the manifest file.

11. A wireless transmit/receive unit (WTRU) comprising: a processor configured to: receive a manifest file comprising a description of a plurality of segments of media content, wherein each segment represents a time-based portion of the media content, and wherein the manifest file indicates a bitrate and an absolute quality level for each of the plurality of segments; select a segment of the plurality of segments based on the bitrate and the absolute quality level associated with the segment of the media content; send a request for the segment of the media content; and receive the requested segment of the media content.

12. The WTRU of claim 11 , wherein the absolute quality level comprises at least one of peak signal-to-noise ratio (PSNR), structural similarity (SSIM), video quality metric (VQM), visual information fidelity (VIF), J.341, or mean opinion score (MOS).

13. The WTRU of claim 11 , wherein the manifest file comprises a media presentation description (MPD) file.

14. The WTRU of claim 11 , wherein the manifest file further comprises a description of a plurality of representations of the media content, and wherein each representation comprises at least one segment of the media content.

15. The WTRU of claim 11 , wherein the manifest file specifies the same time interval of the media content for each segment of the plurality of segments.

16. The WTRU of claim 11 , wherein the processor is configured to select the segment based on the segment having a lowest bitrate of the plurality of segments that have at least a threshold absolute quality level and that are defined by the manifest file to have the same time interval of the media content.

17. The WTRU of claim 11 , wherein the manifest file comprises a segment index file.

18. The WTRU of claim 17 , wherein the segment index file comprises at least one of an MP4 file or an M4S file.

19. The WTRU of claim 17 , wherein the segment index file comprises an ISOBMFF-based file container comprising at least one box, and wherein a segment quality parameter is included within the at least one box of the ISOBMFF-based file container.

20. The WTRU of claim 11 , wherein the processor is configured to receive a presence of the absolute quality level via a flag in the manifest file.